MacBook Pro 15" Stuck on Internet Recovery, Will Not Start from USB, -2004F error code given

Your laptop has a T2 security chip, and as such the access to external boot devices may be limited. You'll want to take a look at this support document for guidance on how to set the allowed boot media and give permission to boot from an external device.

About Startup Security Utility on a Mac with the Apple T2 Security Chip - Apple Support

In Internet Recovery, these low negative thousands error messages (between -1000 and -6000) indicate that your provided Wi-Fi Network is inadequate in some fashion, and cannot be used (for this purpose) in its current state.

Common problems include:

Hidden Network-name

required use of a proxy server to get Internet access

required use of a login page to get Internet access

Use of a login server or certificate to get Internet access

Use of PPPoE in the Mac to get Internet access (typically only applies to DSL)

Use of Fixed IP address rather than good old DHCP

Variance of the time by more than five minutes

Failure of Router to provide workable DNS server addresses, or providing 0.0.0.0 [may produce -2002f]

If you have an Ethernet port, you may in some cases be able to move your Mac close to the Router and connect to the Router using Ethernet.

The higher the number, the more obscure the problem.

If your battery was completely depleted, the Date&Time could have reverted to the default, which will not work. There is a terminal command to reset to current Internet Date&Time -- post back for assistance.

If your Mac starts up to error -1008F

If your Mac starts up to error -1008F - Apple Support

Exactly which Mac model and year are you having this trouble with?

What version of macOS did you create the the installer for?

It sounds as if the usb installer may not have been created properly.

What steps did you take to create it?

This is the procedure you should have followed:

Create a bootable installer - Apple Support